Psocids, annoying house pests ...

By: Material type: TextTextSeries: U.S. Dept. of agriculture. Leaflet ; no. 189Publication details: [Washington, U.S. Govt. Print. Off., 1939]Description: 4 p. 1 illus. 23 cmSubject(s): LOC classification:
  • QL513.P9 B28
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"By E.A. Back."--p. 2.

Contribution from Bureau of entomology and plant quarantine.

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